Greece geared up for a snap election next month, with an opinion poll showing the leftist party Syriza ahead despite a wave of defections over the country's massive new bailout.
Spanish lawmakers overwhelming approved Greece's third bailout package following a debate in parliament which the ruling party used to defend its economic record.
Greek Prime Minister Alexis Tsipras told US Treasury Secretary Jacob Lew his country wanted the eurozone to provide a bailout, but one that "respects the Greek people".
Greece's creditors piled pressure on cash-strapped Athens as the IMF pulled its team out of talks and the EU warned Athens to stop gambling with the possibility of default.
The EU's Economic Affairs Commissioner Pierre Moscovici said he believed "more than ever" that a debt deal was possible between Greece and its creditors.
The International Monetary Fund said that Greece may need debt relief but rejected news reports that it had pushed for it at a eurozone meeting last month.
Greece has agreed to repay its debt to the International Monetary Fund by April 9, IMF chief Christine Lagarde said after a meeting with Greek Finance Minister.
Greek Finance Minister Yanis Varoufakis said he wanted to reach a new agreement with international creditors on his country's debt burden "by the end of May".
German Chancellor rejected the prospect of debt relief for Athens, adding to tensions between the radical new Greek government and its international creditors.
Russia's President agreed to write off most of the debt owed by Uzbekistan in an apparent bid to steer the Central Asian country towards joining the Eurasian Economic Union.