KYIV (Reuters) – Text of a draft law posted on the website of Ukraine’s parliament late on Monday proposed lowering the age of those who can be mobilized for combat duty to 25 from 27. The proposed change comes as Ukraine’s 22-month-old battle against Russia drags on. On Sunday, Ukraine and Russia exchanged claims over downed military aircraft, and on Monday Ukraine denied Russia’s claim that its forces had seized the regional centre Maryinka in eastern Ukraine. The draft text detailed which Ukrainian citizens would be subject to enrolment for military registration of conscripts and said it wo…