Former President Shimon Peres was rushed to a hospital outside Tel Aviv after suffering a stroke.
93 year old has been sedated and breathing with a respirator, his office said. He will now undergo a CT scan.
He was described as conscious and stable when he arrived at Sheba Medical Center in Tel Hashomer.
In January, a successful minor analyzed the same hospital after suffering a heart attack.
“Simon, we love you and the entire nation longs for your recovery,” piped Prime Minister Benjamin Netanyahu.
Veteran politician exist in almost every major political office since Israel was established in 1948, and was the architect of a secret nuclear program in Israel.
He twice served as prime minister and was president from 2007 to 2014.
He won the Nobel Peace Prize in 1994 for his role in negotiating the Oslo Accords with the Palestinians last year, a prize he shared with Prime Minister Yitzhak Rabin, who was later murdered, and Palestinian leader Yasser Arafat.
Despite her advanced age, Mr. Peres has maintained an active public schedule, mainly through its non-governmental Centre for Peace Prize, which promotes closer ties between Israel and the Palestinians.