Qatar said on Tuesday that it has invited Iran to join talks among the world's top oil producers next month on implementing a proposed output freeze to stabilize plummeting prices.

The Qatari energy ministry said all 13 OPEC members including Iran had been invited to the April 17 talks in Doha with key non-cartel producers including Russia.

Oil prices resumed their rise in Asia on Tuesday, staying above $41 a barrel, as OPEC raised hopes of a moderate rebound and announced a meeting of key producers in April.

At around 0600 GMT U.S. benchmark West Texas Intermediate (WTI) for delivery in May, a new contract, rose 20 cents to $41.72. Brent for May was 17 cents higher at $41.71. 

Ukraine's war-torn economy shrank by nearly 10 percent in 2015 as its financial sector imploded and consumer demand shriveled up due to the currency's steep drop against the dollar.

The state statistics service's final adjusted figure of a 9.9 percent contraction in the gross domestic product was an improvement on the 10.4 percent drop forecast by the government at the end of last year.

The dollar strengthened against emerging market currencies in Asia on Monday as traders shook off the effects of a lower interest rate outlook from the U.S. Federal Reserve.  

The greenback last week struggled on the foreign exchange markets after the Fed on Wednesday pulled back their expectations on rate increases in 2016 by about a half percentage point, citing weak global growth and recent market turbulence.

Oil prices dipped slightly during early Asian trading on Monday as fresh oversupply concerns spurred by an increase in operational U.S. rigs bridled a recent rally.

This follows a week of gains that lifted U.S. benchmark West Texas Intermediate (WTI) above $40 for the first time since December, buoyed by a sharp drop in the dollar and revived optimism that producers would strike a deal to freeze output.

Chinese authorities on Monday boosted support for margin trading, which fueled a stunning stock market rally before government restrictions triggered a spectacular rout last year.

Margin trading, through which investors only need to deposit a small proportion of the value of their trades, potentially generates bigger profits but also exposes them to bigger losses.

Egypt said on Sunday that Saudi Arabia has offered $1.5 billion to help finance economic projects in the Sinai Peninsula, as Riyadh continues to bolster its ties with Cairo.

The Federation of Sao Paulo Industries is lit up in the green and yellow of the Brazilian flag, a giant black banner cutting across its facade with a blunt message: "Resign now."

The powerful industry group is not the only major player in the Brazilian economy that is openly hostile to embattled President Dilma Rousseff.

The FBI has agreed to help Bangladesh investigate an audacious $81 million theft from the nation's foreign reserves, authorities said Sunday, days after the finance minister accused central bank officials of complicity in the heist.

A top British euroskeptic minister who quit over welfare cuts launched a damaging attack on Prime Minister David Cameron Sunday, exposing deep tensions within his government ahead of June's referendum on EU membership.