By Pavel Polityuk and Natalia Zinets KYIV (Reuters) – The United States will reopen its embassy in Ukraine soon, its top diplomat said on Monday after he and the U.S. defense secretary visited Kyiv, promising more military aid and hailing its success in pushing back Russia’s invasion. Both Secretary of State Antony Blinken and Defense Secretary Lloyd Austin said the fact they were able to come to Ukraine’s capital was proof of its tenacity in forcing Moscow to abandon an assault on Kyiv last month. “What you’ve done in repelling the Russians in the battle of Kyiv is extraordinary and inspiring…