ANKARA, March 5 (Reuters) - Turkey said on Thursday that it was closely following the actions of the Iranian Kurdish PJAK militant group, which it said threatened Iran's security and regional stability, amid reports of discussions between Iranian Kurdish militias and Washington about the U.S. and Israeli war against Iran.On Tuesday, sources told Reuters that the Iranian Kurdish groups had consulted with the U.S. about whether, and how, to attack Iran's security forces in the western part of the...