by Sebastian Smith Agence France Presse WASHINGTON, United States (AFP) — President Joe Biden leaves Wednesday for Europe on a mission to bolster Western unity, ramp up unprecedented sanctions against Russia over its invasion of Ukraine and attempt to upset the post-Cold War balance of power. The conflict with Russian President Vladimir Putin is redefining Biden’s 14-month old presidency as he pivots from domestic woes to leading the transatlantic alliance in the most serious […]