Senior members of the European Union’s executive branch traveled to Ukraine on Thursday looking to boost relations with the war-torn country and pave the way for it to one day join the bloc, but concerns over corruption and democratic deficiencies remain. European Commission President Ursula von der Leyen led a team of 15 policy commissioners who were to spend the day discussing Ukraine’s financial, business and energy needs, and how to bring the former Soviet state’s legislation into line with EU standards.