Brazilian military police Choque squad search drugs in the Alemao shantytown on March 27, 2012 in , during a police operation to exchange Army guards for militarized policemen to install progressively Peace Police Units (UPP) to control the slum.
Serbian special policemen escort an ethnic Albanian's suspected of war crimes in Belgrade on May 4, 2012. Serbian police have arrested five ethnic Albanians from southern Serbia suspected of war crimes committed during a conflict that engulfed the region in 2001. The police operation was carried out in Bujanovac, some 400 kilometres (250 miles) to the south of Belgrade, where in 2001 ethnic Albanian guerillas of the Liberation Army of Presevo, Medvedja and Bujanovac (LAPMB) fought an armed conflict against Serbian government forces.
Iranian soldiers march during the Army Day parade in Tehran. Iran will respond with force to any threats to its territorial integrity, President Mahmoud Ahmadinejad said in a speech at the parade, adding that it would prefer to cooperate with its Arab neighbours to maintain security in the Gulf.
A soldier from the British Royal Artillery (R) stands by as a Rapier missile defence system, which could play a role in providing air security during the Olympics, is shown to members of the media at Blackheath in southeast London on May 3, 2012. Britain is to rehearse its security measures for the Olympic Games this week in a military exercise involving warships, fast jets, helicopters and dummy missiles, the Ministry of Defence said. Exercise Olympic Guardian, a land, sea and air drill, will take place in three phases from May 2-10 -- the first on the south coast, the second in London's airspace and the final phase on the River Thames.
A female Israeli soldier takes position amid Palestinian civilians at the Qalandia crossing in the occupied West Bank during a demonstration on May 4, 2012 in solidarity with Palestinian prisoners on hunger strike to protest Israel's use of administrative detention orders, under which military courts can order individuals to be held without charge for periods of up to six months, which can be renewed indefinitely.
An Israeli soldier restrains a Palestinian protester, grimacing after being hit by 'skunk' liquid after she was forced down from atop an Israeli military vehicle where she stood waving her national flag, during a protest by some 300 people outside Ofer military prison near the West Bank city of Ramallah on May 1, 2012 in a show of support for prisoners held in Israeli jails. Clashes erupted between stone-throwing youths and the Israeli army, who fired tear gas, rubber bullets and a foul-smelling liquid known as 'skunk' to break up the demonstration.
An Israeli soldier fires tear gas towards Palestinian protesters as some 300 people gathered outside Ofer military prison near the West Bank city of Ramallah on May 1, 2012 in a show of support for prisoners held in Israeli jails.
An injured army soldier reacts after he was hit by a stone thrown by anti-military protesters during a demonstration against military rulers at Abbasiya Square in Cairo May 2, 2012. Egypt's military might hand over to civilian rule earlier than planned in the unlikely event that this month's presidential election produces an outright winner, politicians said after meeting generals on Wednesday.
A Colombian soldier searches a driver at a checkpoint in the rural area of La Montanita in Florencia Province May 2, 2012. La Montanita is near Union Peneya, where three soldiers and one police official were killed by Revolutionary Armed Forces of Colombia (FARC) rebels and French journalist Romeo Langlois went missing on Saturday.