By Conor Humphries and Tim Hepher DUBLIN (Reuters) – The world’s top aircraft lessor Aercap has submitted a $3.5 billion insurance claim for more than 100 jets stuck in Russia following its invasion of Ukraine, setting the stage for a lengthy legal wrangle between lessors and insurers. Dublin-based Aercap had the largest exposure of any lessor when European Union sanctions forced the termination of Russian leases, accounting for 5% of its fleet by value. Not only is its insurance claim expected to be the biggest among lessors seeking compensation for the hundreds of planes worth a total of up …