WASHINGTON, June 6 (Reuters) - The United States understands Israel's concerns about the threat that would be posed by a nuclear-armed Iran, but remains committed to resolving this issue through diplomacy, the White House said on Friday.

"We are trying to solve this diplomatically," White House spokeswoman Dana Perino told reporters. She was responding to a question about reported comments by Israel's Transport Minister Shaul Mofaz that an Israeli attack on Iranian nuclear sites looks "unavoidable" given the apparent failure of sanctions to deny Tehran nuclear technology with bomb-making potential.

Asked whether the United States was keeping military options open as a last resort with Iran, she said President George W. Bush had always said he "would never take any options off the table" but that Washington was pursuing multilateral diplomacy. (Reporting by Paul Eckert, editing by David Alexander)

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