Militant financing case puts Israel and China in spotlight

* U.S. family sues Bank of China in terrorism financing case

* Once supportive, Israel reconsiders sending witness

* Netanyahu faces Chinese pressure over law suit - report

By Crispian Balmer

JERUSALEM, Nov 1 (Reuters) - Long determined to deprive Islamist groups of funding, Israel has unexpectedly hit the brakes in a U.S. court case centred on allegations that the Bank of China knowingly let cash flow to Palestinian militants.

Apparently reluctant to send a former Israeli intelligence official who is a potentially crucial witness to testify in New York, Prime Minister Benjamin Netanyahu faces accusations from his critics that he might let the case unravel rather than put bilateral trade ties with Beijing at risk.

The law suit against the Bank of China was brought by the American family of Daniel Wultz, a 16-year-old killed while on holiday in the Israeli city of Tel Aviv in a 2006 suicide attack claimed by the Islamic Jihad faction during a Palestinian uprising.

From the horror of the attack grew a complex investigation that has already seen the governments of Iran and Syria convicted in a U.S. court for sponsoring Islamic Jihad. They were ordered to pay $323 million in damages to the Wultz family, but have yet to hand over the money.

The family alleges that the Bank of China allowed money from Syria, Iran and elsewhere to pass unhindered through its accounts to the Islamic Jihad, listed by Washington as a terrorist organisation, in violation of U.S. financing laws.

The bank, which is China's fourth largest lender, denies any wrongdoing and is contesting the case. Contacted in China, the state-controlled company declined to comment further.

Israeli newspaper Yedioth Ahronoth said last month that Netanyahu, looking to pave the way for a high-level visit to China in May, had promised not to let any civil servant, past or present, give testimony which might help the prosecution.

Netanyahu's office declined to comment on the report.

A Chinese Foreign Ministry spokeswoman in Beijing, Hua Chunying, said she was not aware of the case. She added that China implemented "a strict oversight ... to prohibit any institution from supporting terrorist activities in any way".

Showing discontent within the Israeli establishment, the former head of Israel's Mossad spy agency has said he was ready to defy Netanyahu and testify himself if the original witness, ex-intelligence official Uzi Shaya, was muzzled.

"If they ask me, if I receive a request from a U.S. court to testify, I would go testify at any time," Meir Dagan, who led Mossad from 2002-2010, told Reuters.