MADRID (Reuters) – Washington is willing to discuss promising not to deploy ground-launched missiles or combat forces in Ukraine if Russia agrees to do the same, according to confidential documents that the Spanish newspaper El Pais said were Washington’s and NATO’s written replies to Russian security demands. El Pais did not say how it obtained the documents. “The United States is willing to discuss conditions-based reciprocal transparency measures and reciprocal commitments by both the United States and Russia to refrain from deploying offensive ground-launched missile systems and permanent …