India, Sept. 30 -- Charlie Kirk, a prominent conservative activist in the United States, wrote Prime Minister Benjamin Netanyahu a letter four months before to his assassination. In the letter, Kirk criticized Israel's social media deficiencies and warned that the country's once-strong support on the US right was waning.

The letter, which was released by the New York Post on Monday, makes seven suggestions for how Israel should refocus its public diplomacy efforts on social media, where research indicates that young people are increasingly obtaining their news. Kirk also volunteered to discuss the matter with the prime minister.

"In my opinion, Israel is losing the information war and needs a 'communications intervention,'" Kirk wrote i...