(BBC): Russia has given Ukraine a discount of almost a third on Russian gas and said it would buy billions of dollars’ worth of Ukrainian government bonds.

The moves come amid Russian attempts to stop Ukraine moving towards the EU.
Russian President Vladimir Putin and Ukrainian President Viktor Yanukovych said they had not discussed Ukraine joining a Moscow-led customs union.
Ukrainian opposition leaders have demanded to know what Mr Yanukovych has offered Moscow in return for the deal.
As protests continued in Kiev over the deepening ties with Russia, opposition leader and boxing champion Vitali Klitschko said he suspected Mr Yanukovych had handed over Ukrainian firms and strategic assets in return for Russian help.
Mr Klitschko told protesters in Independence Square that he wanted early elections and to meet Mr Yanukovych “in the ring”.
Although details of the deal are unclear, Oleh Tyahnybok, leader of an opposition far-right group, said Mr Yanukovych had “pawned whole sectors” of the country’s economy to Russia.