Amidst reports of an imminent ground invasion of Gaza by Israel, US President Joe Biden has said that Israel can make its own decisions, as the US firmly backs its ally while urging caution. The Biden administration is concerned that Israel lacks achievable military objectives in the Gaza Strip, and that the Israel Defence Forces are not yet ready to launch a ground invasion with a plan that can work, senior administration officials said. In phone conversations with his Israeli counterpart Yoav Gallant, US Defense Secretary Lloyd Austin has stressed the need for careful consideration of how Israeli forces might conduct a ground invasion of Gaza, where Hamas maintains intricate tunnel networks under densely populated areas. <br />''<br />''Biden administration officials insisted that the US has not told Israel what to do and still supports the ground invasion. But the Pentagon has sent a three-star Marine, Lt. Gen. James Glynn, along with other officers to help the Israelis with the challenges of fighting an urban war.<br />