By Sinéad Carew and Amanda Cooper NEW YORK/LONDON (Reuters) – The MSCI global index of stocks lost ground in a volatile session on Monday while the dollar gained slightly as investors braced for high inflation data and the start of corporate earnings season. Oil futures sold off and Wall Street’s stock indexes were volatile, while U.S. bond markets were closed for a federal holiday. Weighing on investors was also a Russian missile attack on Ukraine that killed civilians and knocked out power and heat in cites across the country. President Vladimir Putin said he had ordered “massive” long range…