By Karin Strohecker LONDON (Reuters) -Russia rushed forward two payments on its international debt on Friday in its latest attempt to stave off a default that has looked on cards since its invasion of Ukraine. A week before the interest payments are due and just five days before a key U.S. waiver allowing such transfers expires, Russia’s finance ministry said it had wired $71.25 million for a dollar-denominated bond and 26.5 million euros ($28 million) for euro-denominated notes. Russia has faced the prospect of sovereign default since Western capitals imposed sweeping sanctions in the wake of…