Turkey and Britain signed a deal to jointly build fighter jets during Prime Minister Theresa May’s visit to Ankara on Saturday, even as the British leader called on Turkey’s government to uphold democracy and abide by human rights standards. Britain’s BAE Systems and Turkish aerospace industries signed the nearly $125.5 million agreement for the development of Turkey’s fighter jet program after May met with Turkish President Recep Tayyip Erdogan and other Turkish officials about boosting trade between the countries once Britain leaves the European Union.