US President Joe Biden said fresh military aid will begin flowing to Ukraine “in the next few hours” after he signed into law a hard-fought bill that provides for billions of dollars in new spending to support Ukraine’s fight against Russia. “I’m making sure the shipments start right away. In the next few hours – literally in a few hours – we are going to begin sending equipment to Ukraine for air defence munitions, for artillery for rocket systems, and armoured vehicles,” he said at the White House. Biden said replenishing Ukraine’s inventories of US weapons was an investment “not only in Ukr…