Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US Soldiers Killed in Latest Afghan Violence VOA News 31 August 2010 U.S. and Afghan soldiers gather at the scene of a roadside bomb attack in Kandahar, Afghanistan, 30 Aug 2010 Photo: AP U.S. and Afghan soldiers gather at the scene of a roadside bomb attack in Kandahar, Afghanistan, 30 Aug 2010 NATO says insurgents have killed five U.S. soldiers in separate attacks in Afghanistan, continuing a string of deadly days for American troops. Four of the soldiers were killed Tuesday in a roadside bombing in the east, while the other soldier was killed during an insurgent attack in the south. Seven American troops and an Estonian soldier were killed by roadside bombs on Monday. U.S. President Barack Obama warned Tuesday of a "tough fight" ahead in Afghanistan, with more casualties likely. He spoke to troops in the southern U.S. state of Texas ahead of a speech marking the end of combat operations in Iraq. The head of U.S. and NATO forces in Afghanistan, General David Petraeus, said Tuesday Taliban militants were still trying to expand their influence in parts of Afghanistan, even as coalition forces close in on their southern strongholds. Petraeus acknowledged insurgents were fighting back hard. Petraeus also told reporters that a plan to begin withdrawing U.S. troops next year will not amount to a hand-off of security to Afghan forces. The U.S. and NATO commander said the July 2011 drawdown announced by President Barack Obama will instead be a gradual "thinning out" of coalition forces. Petraeus said the last of the additional 30,000 troops Mr. Obama ordered to Afghanistan will arrive in the next few days, bringing the number of U.S. and NATO forces in the country to nearly 150,000. NATO chief Anders Fogh Rasmussen on Tuesday voiced support for Afghan forces to begin taking charge of the country's security in 2011. He said the issue would be taken up during the upcoming NATO summit in November. And British Deputy Prime Minister Nick Clegg reaffirmed Britain's combat mission in Afghanistan will end by 2015. He made the comments Tuesday while visiting British troops in the southern Afghan province of Helmand. British aid group Oxfam said Tuesday it is temporarily suspending operations in the northern province of Badakhshan after a roadside bombing killed two of its Afghan staff workers and a volunteer Monday. Elsewhere, gunmen on a motorcycle shot and killed three Afghan Supreme Court employees traveling on a bus near Kabul Tuesday, in the Mosahi district of Kabul province. At least 12 others were wounded. Some information for this report was provided by AP and AFP. .