The United States on Tuesday welcomed Ukrainian President Petro Poroshenko's decision to sign draft amendments to Ukraine's constitution to de-centralize the powers, which he will then table in parliament. "We would welcome President Poroshenko's statements yesterday noting he will continue to advance constitutional reforms and address calls for early local elections in Donetsk and Luhansk to promote unity," State Department spokeswoman Jennifer Psaki told reporters. "We have seen a range of reports of renewed Russian troop movements closer to the Ukrainian border, and we are also closely monitoring that situation," Psaki added during the daily press briefing.