Joe Biden mixed up Gaza and Ukraine twice in an official address today in yet another mix-up for the 81-year-old president. In a joint address with Italian Prime Minister Giorgia Meloni, Biden appeared to confuse the two battlegrounds as he discussed US aid to Gaza. Speaking to reporters in the Oval Office, Biden said: “Today, I also – we’re going to discuss the Middle East and yesterday’s tragic and alarming event in north Gaza, trying to get humanitarian[s] in there – and the loss of life is heartbreaking. “People are so desperate that innocent people got caught in a terrible war to feed the…