KYIV (Reuters) – A letter from Ukrainian Prime Minister Denys Shmyhal requesting an emergency meeting with international donors and seen by Bloomberg news agency was part of “systemic work” with the country’s partners, the state-run Ukrinform news agency quoted a senior source as saying late on Thursday. The country’s economy depends heavily on financial support from partners and Kyiv has been concerned whether it will continue as new aid packages have been recently blocked both in the European Union and in the United States. Bloomberg reported earlier on Thursday that Shmyhal had sent a lette…