Updated

The United Nations' under-secretary-general for political affairs has arrived in Kiev to meet with Ukraine's interim government.

Jeffrey Feltman met with Ukraine's acting president Oleksandr Turchynov early on Wednesday. British Foreign Secretary William Hague also arrived in Ukraine to speak with the nation's leaders.

The U.S. and European nations have increased diplomatic efforts ahead of Ukraine's May 25 presidential election, as a pro-Russian insurgency continues to rock the country's eastern regions. Feltman was in Moscow on Tuesday and met Gennady Gatilov, a deputy foreign minister.

Speaking in a BBC interview, Hague lent his support to the election. He says Ukrainians "cannot be bullied out of having their elections by disorder that is deliberately fomented and coordinated from another country, in this instance Russia."