'Biden visit to Israel may have triggered Palestinian stabbings'

Vice President Joe Biden’s visit to Israel may have served as the trigger for Palestinian assailants to commit attacks against Israelis on Tuesday, defense officials said.
Police said that after a situation assessment held by the senior police brass and Public Security Minister Gilad Erdan, they decided to increase their manpower and patrols across the country as a result of Tuesday’s attacks.
They added that they have not found any linkage between the three attacks and that they had no prior warnings.