Qatar plans to buy U.S. Patriot missile batteries and Apache attack helicopters in a major arms deal worth about $11 billion, senior Pentagon officials said Monday.

The sale would provide Qatar with roughly ten batteries for Patriot systems designed to knock out incoming missiles, as well as 24 Apache helicopters and 500 Javelin anti-tank missiles, officials, who spoke on condition of anonymity, told Agence France Presse.

The price of oil edged lower Monday after its biggest one-day drop since April on expectations Libyan oil will soon return to the market.

Benchmark U.S. crude for August delivery was down 39 cents to $100.44 per barrel at 0535 GMT in electronic trading on the New York Mercantile Exchange. It fell 3.1 percent last week and is down 4.3 percent so far in July.

Portugal's central bank held an extraordinary meeting on Sunday with the board of directors of Banco Espirito Santo (BES) to begin the formation of a new management team, it said in a statement.

Financial authorities are seeking to fill the power vacuum at the head of Portugal's biggest listed bank, which is being hammered by its parent group's debt troubles. 

Singapore's trade-reliant economy unexpectedly contracted in the second quarter, the government said Monday, as weak global demand weighed on the key manufacturing sector.

Gross domestic product (GDP) shrank an annualized 0.8 percent on-quarter in the three months to June, according to advance trade ministry estimates that were below market expectations.

Ratings agency Fitch warned on Monday that a merger plan by Malaysia's second largest bank CIMB Group with RHB Capital and Malaysia Building Society to create the country's biggest lender was fraught with risk.

"The proposed merger of CIMB, RHB and Malaysia Building Society (MBSB) is ambitious, and will bring inherent challenges and risks for the new banking group amid a complex integration process," Fitch Ratings said in a statement.

Australia's central bank governor Glenn Stevens Saturday urged politicians to work together to address the growing gap between fiscal spending and revenue, as the government battles to push through massive budget cuts.

In a rare newspaper interview, Stevens told The Australian "financial markets might not be so forgiving as they are now" if the country did not start to manage its budget "in a measured way".

Argentine officials and holdout bondholders met separately with a US court-appointed mediator Friday in New York but failed to clinch a deal to resolve a dispute that could trigger a default by Buenos Aires.

With the clock ticking toward a July 30 deadline, Argentina needs to reach an agreement on paying more than $1.3 billion claimed by hedge funds, mainly NML Capital and Aurelius Management, which refused to join other bondholders in the 2005-2010 restructuring of the country's defaulted debt.

The BRICS group of emerging powers will launch its own development bank at a summit next week, using its growing influence to establish a counterweight to Western-dominated financial organizations.

Fresh from the World Cup final, Brazilian President Dilma Rousseff hosts the leaders of Russia, India, China and South Africa in Fortaleza on Tuesday before an unprecedented meeting with South American leaders the next day in Brasilia.

Japan's SoftBank and Deutsche Telekom of Germany have reached a basic agreement for a merger between their U.S. affiliates Sprint and T-Mobile U.S., the business daily Nikkei reported Saturday.

Eight financial institutions, including Japan's top three megabanks Mizuho, Mitsubishi UFJ and Sumitomo Mitsui, will provide a credit line of around four trillion yen ($39 billion) for SoftBank's purchase of T-Mobile through Sprint, according to the report.

Russian President Vladimir Putin said Thursday he hopes to increase Russian investments in and trade with Latin America.

During a tour in Cuba that will also take him to Argentina and Brazil, the Russian leader said he was focusing on enhancing technological cooperation and investment, especially in the sectors of energy, nuclear power and machinery.