Vienna, June 28, IRNA � Iranian Foreign Minister Mohammad Javad Zarif held separate bilateral and intensive meetings with his US and German counterparts as well as EU foreign policy chief and Chinese deputy foreign minister in Vienna on Sunday evening.

Zarif's meetings with John Kerry, Frank-Walter Steinmeier, Federica Mogherini and Wang Yi took place after his consultations with British Foreign Secretary Philip Hammond today.

The Zarif's Sunday meeting with Kerry was the fourth one over past two days.

Earlier today, German Foreign Minister Frank-Walter Steinmeier urged negotiating parties in Vienna to remain committed to Lausanne statement.

Steinmeier said that he believes that the framework agreement reached in the Swiss City of Lausanne has to be turned into a treaty context. He said that this may seem simple, but it is actually a difficult job.

Steinmeier who was speaking to reporters as he was leaving Vienna's Coburg hotel, declined to elaborate on the issues holding up the talks.

'We negotiate inside the room, not outside it,' he said.

The German foreign minister likened the nuclear talks with Iran to climbing to the peak.

'This issue was in front of us like a big mountain for more than a decade. Now we are in the final stage of climbing to the peak. If the weather does not change, we can reach the peak and find solutions,' Steinmeier said.

He said that both sides have to be courageous enough to make decisions, otherwise, the people will not forgive them.

By IRNA