Britain is braced for a diplomatic uproar after a senior Israeli politician warned that she was preparing to travel to the U.K., where she faces an arrest warrant for alleged war crimes.

Tzipi Livni, the former Israeli Foreign Minister and now the leader of the Opposition, said that she wanted to test promises by David Miliband, the British foreign secretary, that he would change the law to ensure that she was not arrested for her role in last year’s Gaza offensive.

In December, a London court agreed to a request by pro-Palestinian groups to issue a warrant over alleged war crimes during the military operation, which took place when Livni was foreign minister. The court rescinded the warrant when it became clear that she was not on British soil.

At the time, Prime Minister Gordon Brown and Miliband pledged to prevent this happening again and the government has since been considering various ways of changing the law.

One plan would see a ban on arrest warrants for alleged war crimes, while another could give immunity to former ministers.

Livni has set a deadline of Feb, 23, after which she told The Jewish Chronicle that she planned to visit “within weeks.”

“I will do this not for me, not for provocation, but for the right of every Israeli to travel freely," Livni said. "I am not going to be restricted by extremists because I fought terror.”

Click here for more on this story from the Times of London.