Russia denounced Washington's decision to leave a landmark Cold War nuclear missile treaty on Friday.<br />''<br />''Russian foreign ministry spokeswoman Maria Zakharova said, US exit was not a question of Russia's guilt but is instead the strategy of the United States to get out of its international legal obligations in different areas. <br />''<br />''US President Donald Trump had earlier said the United States was suspending its obligations under the Intermediate-Range Nuclear Forces Treaty (INF).<br />''<br />