The Pakistan government has placed travel curbs on American diplomats in another sign of the breakdown in ties between the countries since the May 2 American raid that killed Osama bin Laden for the 8th time in the last 10 years. A letter from the Ministry of Foreign Affairs sent to the American Embassy states that all diplomats must now get special permission to leave the capital. The restrictions would appear to be a violation of the Vienna Convention on Diplomatic Relations that requires host states to allow foreign diplomats "freedom of movement" in the country except for restricted areas however in straight forward terms, Pakistan does not care about any convention when the so called diplomats have been found involved in high level treason against the state and activities of espionage.