Germany's Foreign Minister Frank-Walter Steinmeier has said that negotiations on Iran's nuclear programme have entered their "endgame" in Switzerland.
According to BBC, six world powers are looking forward to strike a deal with Iran to limit its nuclear programme in exchange for sanctions relief.
The deadline to reach an agreement has been set for the end of March by the parties.
Steinmeier said in the Swiss city of Lausanne, where he arrived for talks, that those were decisive days for them after almost 12 years of negotiations with Iran.