Indian air space has been violated 29 times by foreign aircraft during the period from December 2007 to November, 2010. These include 23 occasions by Pakistan, 1 by Bangladesh, 3 by China and 2 by USA.
Standard Operating Procedures (SOPs) are in place for safeguarding Indian airspace, including by deployment of IAF aircraft. The matter is also taken up with the concerned country through diplomatic channels as per established procedure.