As bailouts for the Greek debt crisis were negotiated, Angela Merkel was often depicted in Greek magazines wearing Nazi symbols. This cover from the satirical magazine "Mystiki Ellada," from 2012, does not explicitly do so, but does portray the chancellor wearing a World War II army uniform and a vulture on her shoulder. The German government never considered any legal claims for such depictions.

The controversial potential Republican US presidential candidate Donald Trump is often the target of cartoons and satire. The real estate mogul is not exactly open to criticism. Last Sunday (10.04.2016), "The Boston Globe" published a parody front page showing the world under his presidency. Trump shot back calling the story "stupid" and "worthless."

Russian President Vladimir Putin likes to show off his muscles on holiday photos. After he let the world see a picture of himself riding a horse bare-chested, Putin's presidential torso was also emphasized in satirical representations - such as here, during a Carnival parade in Dusseldorf in 2015.

The communist ruler of North Korea really doesn't appreciate being at the center of a joke. Upon the planned release of the satirical movie "The Interview," depicting a fictional interview with the North Korean leader and CIA plans to assassinate him, hackers attacked Sony Pictures studios. The FBI determined that the North Korean government was behind the cyber attacks.

There's a long tradition of poking fun at top politicians: This British cartoon from 1915 portrays Winston Churchill, then Secretary of the Navy, as a decadent Achilles during the Trojan War. The drawing criticized the failures of his leadership during the Battle of Gallipoli in the Dardanelles.

The 43rd president of the United States was one of the most reliable suppliers of jokes for late-night comedians in the US. Cartoons often underlined his alleged lack of intelligence. Satirists recently jumped on the opportunity to ridicule him once again when he revealed he had turned to painting.

A float at this year's Carnival parade in Dusseldorf sparked diplomatic tensions between Poland and Germany. It depicted Poland as a battered woman trampled by the boot of the leader of the right-wing Law and Justice Party, Jaroslaw Kaczynski. The Polish Foreign Minister said that it showed "contempt for the Polish people and Polish politicians."

The Israeli prime minister with the unmistakable deep voice is regularly lampooned by the comedians of the TV show "Eretz Nehederet" ("A Wonderful Country"). The weekly satirical television show is one of the most popular in Israel. Netanyahu was never publically offended by the parodies. On the contrary, "Bibi," as he's nicknamed, was even a guest star of the show in 2013.

Just like Jan Böhmermann, the Dutch-born entertainer Rudi Carrell, who lived in Germany, created a diplomatic controversy in 1987 with a photo montage showing the leader of Iranian Revolution, Ayatollah Khomeini, being pelted with lingerie during a state visit. As a result, two German diplomats were expelled from Tehran.

It is still to be seen if Jan Böhmermann's provocative poem on Erdogan will lead to a similar diplomatic crisis as back in 1987 with Iran. One thing is for sure, it is not the first time that political satire has led to tensions between countries - and the ways of dealing with it are just as varied as the ruler's political style.

March 31, 2016: Turkish President Recep Tayyip Erdogan filed charges against German comedian and satirist Jan Böhmermann over his "defamatory poem" about the Turkish leader. German prosecutors eventually dropped the charges on October 4, 2016, but the case sparked a diplomatic row between Berlin and Ankara.

June 2, 2016: The resolution passed almost unanimously. In response, Turkey recalled its ambassador in Berlin and Germany's Turkish community held protests in several German cities. Turkey had repeatedly criticized the use of the term genocide to describe the Ottoman-era Armenian killings, arguing that the number of deaths had been inflated, and that Turkish Muslims also perished in the violence.

July 15, 2016: A faction of the Turkish military tried to overthrow President Recep Tayyip Erdogan, but ultimately failed. Ankara accused Berlin of not taking a clear stand against the coup attempt or not doing anything about exiled preacher Fethullah Gulen's organization, who Erdogan blames for orchestrating the failed coup.

Immediately following the attempted coup, Turkish authorities purged the army and judiciary, detaining thousands of people. The purge expanded to include civil servants, university officials and teachers. German politicians criticize the detentions. Turkish diplomats, academics and military members fled the country and applied for asylum in Germany.

Erdogan's post-coup crackdown has also been condemned by Kurdish protesters at several mass demonstrations in the west German city of Cologne. Often the rallies have called for the release of Abdullah Ocalan, the jailed leader of the Kurdistan Workers' Party (PKK), which Turkey considers to be a terror group. Ankara has accused Berlin of not doing enough to stop PKK activities.

February 14, 2017: Deniz Yücel, a correspondent for the "Welt" newspaper, was taken into custody in Turkey. Other German nationals, including journalist Mesale Tolu and human rights activist Peter Steudtner were detained in Turkey for what Berlin dubbed "political reasons." Turkey accused them of supporting terrorist organizations. All three have since been released pending trial.

March 2017: A number of German localities blocked Turkish ministers from holding rallies in their districts ahead of an April referendum in Turkey to enhance President Erdogan's powers. The Turkish leader then accused Germany of using "Nazi tactics" against Turkish citizens in Germany and visiting Turkish lawmakers. German leaders were not amused by the jibe, saying Erdogan had gone too far.

March 30, 2017: Germany accused Turkey of spying on hundreds of suspected Gulen supporters as well as over 200 associations and schools linked to the Gulen movement in Germany. Turkish asylum-seekers have since accused officials working in Germany's immigration authority (BAMF) of passing on their information to media outlets with ties to the Turkish government.

August 18, 2017: Turkish President Recep Tayyip Erdogan slammed three of Germany's main political parties as "enemies of Turkey" and told Turks living in Germany not to vote for them in September's general election. He singled out Merkel's Christian Democrats (CDU), the Social Democrats (SPD), and the Greens. Merkel said Erdogan was "meddling" in Germany's election.

September 4, 2017: German Chancellor Angela Merkel said during an election debate that she didn't think Turkey should become a member of the European Union and said she would speak with other EU leaders about ending Ankara's accession talks. In October, she backed a move to cut Turkey's pre-accession EU funds.

January 20, 2018: The Turkish military and their Syrian rebel allies launched "Operation Olive Branch" against the Kurdish-held enclave of Afrin in northern Syria. The move was criticized by German politicians and prompted large protests by Kurdish communities in Germany.

February 16, 2018: Turkey ordered the release of German-Turkish journalist Deniz Yücel after he'd been held for over a year without charge. According to Turkish state media, Yücel was released on bail from pre-trial detention. Prosecutors asked for an 18-year jail sentence for Yücel on charges of "terror propaganda" and incitement.

July 2018: German footballer Mesut Özil quit the national team following the fallout from his meeting with the Turkish president. Özil said he was being made a scapegoat for Germany's forgettable performance at the FIFA World Cup in Moscow because of his Turkish heritage. Erdogan praised Özil's decision and slammed the "racist" mistreatment of the footballer.

August 2018: A Turkish court removed the travel ban on German journalist Mesale Tolu, who was arrested last year on terrorism-related charges. But the trial against Tolu, who has since returned to Germany, is set to continue. Her husband, Suat Corlu, who is facing similar charges, has been ordered to remain in Turkey.