By Lawrence White and Brenna Hughes Neghaiwi LONDON (Reuters) – Goldman Sachs Group Inc on Thursday became the first U.S. bank to withdraw from Russia following its invasion of Ukraine, while Credit Suisse said it had gross exposure to Russia of 1.6 billion Swiss francs ($1.73 billion) at end 2021. Goldman Sachs, which has a credit exposure to Russia of $650 million, said it was winding down its business there, in a move that will likely increase pressure on rival lenders to follow. Any losses would be “immaterial,” according to a source familiar with the situation.[nL3N2VD3DU] Western compani…