KYIV (Reuters) -British Prime Minister Rishi Sunak visited Kyiv on Friday to announce an increase in military funding to help Ukraine purchase new military drones, including surveillance, long-range strike and sea drones. London has been one of Kyiv’s closest allies during Russia’s invasion and Sunak said Britain would increase its support in the next financial year to 2.5 billion pounds ($3.19 billion), an increase of 200 million pounds on the previous two years. “I am in Ukraine to deliver a simple message. Our support cannot and will not falter,” Sunak wrote on social media platform X. His …