Uzbekistan’s state oil and gas firm Uzbekneftegaz has signed a cooperation agreement with U.S. corporation Cargill, under which the parties will look to attract up to $5 billion in energy investment to boost the central Asian country’s energy security. Uzbekneftegaz’s international trade and investment subsidiary, UNG Overseas, has signed the agreement with the U.S. conglomerate, the Uzbek oil and gas firm said in a statement. Uzbekneftegaz and Cargill have agreed to raise long-term financing of up to $3…