Moscow had argued for 15 years that the missile placement would violate the now defunct INF Treaty. Washington disagreed and also counter-charged in 2014 that Russia had deployed a ground-based cruise-missile that exceeded INF range limits. Could this standoff be resolved? It is one of a few regional East-West security disagreements whose resolution might, as a side deal, favorably affect Moscow’s approach to negotiating an end to the Ukraine war. AP: US and Polish officials open missile defense site that Russia has long protested. Stars & Stripes (AP), US and Polish officials open missile defense site