The back of a truck carries a poster portrait of Turkish President Recep Tayyip Erdogan and reading “The leader of this century may you speak, the whole world listening to you,” passes the highway toll station in Istanbul.

Prime Minister Binali Yildirim on Saturday insisted the United States was Turkey’s “strategic partner, not our enemy” despite Ankara’s anger at Washington for failing to extradite Fethullah Gulen, whom it blames for last month’s failed coup.

“There can be ups and downs in the two countries’ relations (but) we need to remove elements that harm our relations,” Yildirim told journalists in Istanbul, referring to the Pennsylvania-based cleric.

Ankara has for years accused Gulen of running a “parallel state” in Turkey and it also blamed him for ordering the failed putsch of July 15.

The reclusive cleric, who has lived in self-exile in the United States since 1999, strongly denies any involvement in the coup attempt.

Ankara had previously suggested any failure to deliver Gulen would severely damage bilateral ties and Justice Minister Bekir Bozdag said it was up to Washington to extradite him to prevent “anti-US feeling” in Turkey turning into “hate”.

Biden visit

The White House has confirmed that US Vice President Joe Biden will visit Ankara next week in the highest-ranking visit to Turkey by any Western official since the coup.

Yildirim also confirmed a technical delegation would arrive on August 22 for talks with Turkey’s judicial authorities ahead of Biden’s visit.

“I hope this process will be finalised in a way favored by both countries, and (that) questions in the minds of Turkish people about America will be removed.”