US unveils plan to tackle piracy

She said an expanded international effort was needed, as well as freezing pirates' assets, and plugging gaps in the shipping industry's own defences.
Improving the situation in Somalia itself was also key, she said.
Pirate attacks have increased in the past few days, including on US vessels, despite anti-piracy patrols by the US and other navies.
Mrs Clinton said: "We may be dealing with a 17th-Century crime, but we need to bring 21st-Century assets to bear."
The US Navy shot dead three pirates a few days ago in the rescue of a US cargo ship captain who had been taken hostage from his own ship.
The captain was unhurt and a fourth pirate was captured.
His crew had managed to fight off the armed pirates from the Maersk Alabama, but the captain was taken away in a lifeboat.
Among recent developments:
Another US ship, the Liberty Sun, was attacked by armed pirates, but escaped them with slight damage to the vessel.
The crew of the Maersk Alabama flew home to the US from the Kenyan city of Mombasa, but their captain's own return was delayed as he was still on the USS Bainbridge, the warship which had diverted to assist Liberty Sun.
One pirate said the attack on the Liberty Sun was revenge for the recent deaths of pirates.
The French navy captured 11 pirates after intercepting a command vessel about 550 miles (900km) off the coast of Kenya.
The Greek maritime ministry announced that a Greek cargo ship and its 24 crew, held by pirates since mid-March, had been released.