Ukraine pledges to make an interest payment on the Russian debt in the coming days.

Germany’s central bank says Greece does not have "much time left" for a deal to rescue Athens from default.

IMF chief says there is "no period of grace" for Greek debt payment.

German Chancellor Angela Merkel says she is "still convinced" that a Greece debt deal is possible.

An analyst says Greece needs to withdraw from the Euro zone and choose its own currency to get rid of its debt crisis.

German, French, and Greek leaders hold a teleconference over the financial troubles Athens faces.

European stock markets have fallen with Greece the hardest hit. The plunge came after Athens postponed its repayment to the International Monetary Fund till the end of this month. Athens Stock Exchange General Index lost 5.14 percent, making it the most among western-European markets. The stocks of Greek banks also suffered heavy losses of over five percent. The yield on the Greek government’s 10-year bond jumped 40 basis points to 11-point-32 percent. Major European markets also suffered in morning deals. London’s Footsie one-hundred index lost one percent. France’s CAC 40 tumbled 1.46 percent compared with Thursday's close. Frankfurt's DAX 30 shed one-and-a-half percent in morning trade. The uncertainty surrounding Greece’s future in the eurozone and its decision to bundle its repayments to the IMF into one on June 30 have worsened market jitters. Experts say Europe shares are set for their worst week amid the Greek debt crisis.

Royal Dutch Shell says it is discussing repayment of an outstanding debt to Iran of $2.3 billion as the energy giant eyes new opportunities in the country.