European markets opened mixed on Monday, as uncertainties over Spain persist.

The FTSE 100 was modestly down, falling 0.10% or 7.77 points to 7,515.71. Paris's Cac 40 was up 0.1% as was Germany's Dax 0.1%.

Spain's Ibex was down 0.44% after the Spanish government outlined measures to take control of Catalonia.

Japanese equities continued their winning streak on Monday after a landslide victory for Prime Minister Shinzo Abe sent the Nikkei up more than 1%.

Japan's Nikkei and Topix led the region, gaining 1.11% and 0.84% respectively Monday on Abe's victory, which will ensure loosened monetary policy will continue and clearing a hurdle for Abe's long-term goal to amend the constitution.

This was the 15th straight day for gains for the Nikkei, marking its longest winning streak on record. The Topix rise marked its 11th straight day of gains.

The Hang Seng was up 0.67% and the Shanghai Composite was up just 0.02%.

Markets in Europe could have a more tempered reaction as investors continue to watch for developments in Spain. On Saturday Prime Minister Mariono Rajoy unveiled a number of measures, including a plan to clear out the entire separatist regime in Barcelona and take control of key institutions in the media and police, in response to the regions referendum on independence on Oct. 1.

Catalonian leaders will meet Monday to formulate a response to the actions by Rajoy.

U.S. futures were pointing to a modest gain at opening. Dow Jones Industrial average mini futures were up 0.08% and S&P 500 mini futures gained 0.01%.

The dollar also rose against major currencies on Sunday, up 0.08% against the euro, 0.01% against the pound and 0.3% against the yen.

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