US President Joe Biden warned Israel on Thursday that it cannot use aid as a “bargaining chip” and called for an immediate temporary ceasefire in Gaza, where fears of a looming famine have multiplied amid a brutal Israeli war. Using his annual State of the Union address to deliver some of his strongest comments yet about the five-month-long war, Biden also ordered the US military to lead “an emergency mission” to build a temporary pier off Gaza to facilitate more aid deliveries. His address was delivered to Congress as hopes dimmed for a new truce before the start of Ramadan after Hamas negoti…