Preparations in full swing for Obama-Medvedev visit

US and Russian security and logistics teams have arrived in Prague to prepare for an upcoming visit by US President Barack Obama and Russian President Dimitri Medvedev. The two heads of state are due to sign a landmark nuclear disarmament treaty in the Czech capital on Thursday and hold a series of bilateral talks. The US president is moreover meeting with 11 Central and East European leaders who are all expected to arrive on Thursday. The high-profile event is accompanied by a massive security operation.