Vladimir Putin will meet senior Russian government officials to discuss Russia’s economic ties with Ukraine, including on energy after state-controlled natural gas producer Gazprom said Kiev missed a deadline to pay a $2.2 billion bill.

In previous years, gas disputes between Moscow and Kiev have hurt supplies to Europe. The Ukraine government has said it would take Russia to an arbitration court if Moscow failed to roll back gas price hikes.

U.S. Secretary of State John Kerry accused Russian agents and special forces of stirring separatist unrest in eastern Ukraine, saying Moscow could be trying to prepare for military action as it had in Crimea. Armed pro-Moscow protesters occupied Ukrainian government buildings in two cities in the largely Russian-speaking east.

Speculation is rife that Greece is about to issue its first bond in four years as soon as today though our sources have not supported this and the finance minister has said he is in no rush.

We reported last week that Athens had hired a group of banks for the syndicated sale which we’re told will aim to raise 2 billion euros of five-year paper. Greece sold six-month treasury paper on Tuesday at the cheapest borrowing cost since its debt crisis exploded in 2010.