The United States announced a further military aid package for Ukraine worth $255 million on Thursday to help the country battle against the ongoing Russian invasion. The new package includes the Patriot air-defence system already announced by the US, as well as NASAMS anti-aircraft missiles, HIMARS multiple rocket launchers as well as 155-millimetre and 105-millimetre artillery ammunition, according to the Pentagon. The weapons will be provided from existing US military stocks, it said. Shortly before the announcement, US President Joe Biden and Ukrainian President Volodymyr Zelensky met for …