ANKARA (Reuters) - Turkey cannot accept the Syrian Kurdish YPG militia being invited to Syria talks in the Kazakh capital of Astana, a spokesman for President Tayyip Erdogan said on Wednesday. A senior Kurdish official said on Tuesday Russia had invited the Kurdish-led authorities in northern Syria to a proposed congress of Syria s rival parties in November, as Moscow seeks to launch a new initiative to end the Syrian conflict. Presidential spokesman Ibrahim Kalin said Turkish and Russian officials had discussed the issue and that he had held meetings of his own to  solve the problem on the spot.  