
What does Putin want in Ukraine? The conflict explained
CNN
After months of military buildup and brinkmanship on its border with Ukraine, Russia invaded its ex-Soviet neighbor with a multi-pronged attack, threatening to destabilize Europe and draw in the United States.
A whirlwind of diplomatic efforts to stave off a Russian invasion in recent weeks failed to defuse tensions that had mounted over months.
Russia had been tightening its military grip around Ukraine since last year, amassing tens of thousands of soldiers, as well as equipment and artillery, on the country's doorstep.

The governments of Mexico and the United States signed a memorandum of understanding on Thursday to fund and expedite several wastewater treatment projects in the Tijuana River basin. Untreated wastewater continually affects residents living along the river, which flows across the border from Tijuana and through several of San Diego’s southern neighborhoods.