Iran's President Hassan Rouhani ATTA KENARE/AFP/AFP/Getty Images

Iranian President Hassan Rouhani spoke with Turkish President Recep Tayyip Erdogan over the phone Saturday, Iranian state news agency IRNA reports.

Rouhani said the region should join in unison against the US presence in the area or the whole region will be in jeopardy.

He stressed the "assassination" of Qasem Soleimani was a big mistake and retaliation is crucial because "if we remain silent against the US, it will become bolder and more aggressive."

Rouhani stated that, according to the Quran, “we do not oppress nor be oppressed.”

The Iranian president said that "we expect that all our friends and neighbors should explicitly condemn this crime."

During the call the Turkish president extended his condolences to the Iranian Supreme Leader, the Iranian nation and the government of the Islamic Republic.

Referring to the ongoing developments in Syria, Rouhani said that the Iranian involvement there will remain the same.

“The efforts will continue within the framework and level of the Iranian, Turkish and Russian leaders to resolve Syria problem,” he said.