Sadly, this headline seems to be misleading. Checking for additional sources, I can find none that confirm that he actually called for a ceasefire.
According to the Associated Press, he did decry the loss of life in Gaza and announce that the US are about to commence airdrops of humanitarian aid, but at no point did he seem to do what this headline implies.
A Reuters article covering the same conference mentions the possibility of a ceasefire, but this apparently referred to a previous conversation a few days ago.
Unless anyone can find evidence to the contrary, I have to assume that this Newshub article is clickbait.