But relations between Erdoğan and the Gülenists have soured.

This constitutional mechanism has been strained by recent events.

The bilateral relationship has been rocky ever since, alternating between periods of friction and conciliation.

The relations between both countries were damaged in 1956 due to the Soviet intervention in the revolution occurring in Hungary.

However, the Shatuo relationship with the Khitans, which was vital to their rise to power, had soured.

After that, he briefly served in the provisional Ethiopian government, but his relationship with the new power holders soured quickly.

Although Santos was both Uribe s defense minister and preferred successor, relations between the two have soured.

Relations soured during the Gulf War when Pakistan contributed troops for the UN Coalition, seeing it as a betrayal due to Iraq's constant support for Pakistan in their previous wars with India.

The US Turkish partnership, badly strained by the war in Iraq, was reinvigorated by President Barack Obama s visit to Turkey in June.

Relations with India have soured in recent months, because Pakistan s government is once again lending diplomatic support to the insurgency in Indian controlled Kashmir.

Its relations with the West and with the United States in particular have frayed in the turmoil unleashed in the Middle East and North Africa by the Arab Spring.

A favorite leisure spot, they appear on Brazil s most widely recognized postcard and also offer a less than sunny portrait of the country s strained class and race relations.

Bilateral tensions flared when Thai politics heated up after the September 2006 military coup that overthrew the democratically elected prime minister, Thaksin Shinawatra, on charges of corruption and disloyalty to the monarchy.