Mr Clarke said the EU should increase co-operation in areas such as re-uniting migrant families.
The first Asia Europe meeting was held in Bangkok two years ago and established a new forum for countries in the two regions to increase co-operation.
The Kremlin said on Saturday that President Vladimir Putin had agreed with President Obama during a telephone conversation to increase co-operation in the wake of the Boston attacks.
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He added that one treaty would commit the two countries' forces to work "more closely than ever before" while the other - to last 50 years - would increase co-operation on "nuclear safety".
All that is very tempting: unfortunately, as they become embedded in an operation, they increase the risk of data corruption or human error.
They continue to increase -- over the first three days of operation we have gone from 6, 000 to 11, 000 -- trying to increase that production rate, ultimately close the venting valves and move to a greater capacity.
It makes no operational sense to attack random computers, which would increase the likeliness of discovery and compromise the operation.
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If the average consumer is already stingily holding onto their spending money, a bill to increase the amount of small businesses currently in operation is not going to pry it out of their fingers.
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Mexican officials put the successes down to better intelligence and co-operation with America, plus a fivefold increase in the size of the federal police force (counting officers seconded from the army).
Harley's chief financial officer, James Ziemer, expects a rate increase this year and is braced for earnings growth at the financing operation to fall from 65% to 25%.
But as a direct-mail-dependent operation that raises its money mostly from small donors, we could only increase our efficiency percentage by limiting our mailings to the most productive mailing lists.
Nevertheless, Donald Harleman, a hydrologist at the Massachusetts Institute of Technology, argues that it is possible to use selective operation of the gates, when there is no flood risk, to actually increase flushing.
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