India, July 21 -- The simmering rift between the Kerala Pradesh Congress Committee and the party's Thiruvananthapuram MP Shashi Tharoor erupted into open hostility on Sunday, with senior leader K Muraleedharan declaring that the latter would no longer be invited to any party programme in the state capital unless he changes his stance on national security.

In a strongly worded statement, K Muraleedharan said Shashi Tharoor, who is also a Congress Working Committee (CWC) member, was no longer considered as "one of us".

The Kerala Congress was replying to journalists' queries seeking his view on Shashi Tharoor sticking to his stand on the issue of national security.

His response also comes a day after Tharoor had said the nation comes fir...