Expect gas prices to push close to $4 a gallon this summer. Experts say that part of the reason is what is happening halfway around the world. Texas energy economist Bud Weinstein says the Russia-Ukraine conflict brings fears about what the Kremlin could do. But he says the rising gas prices are more a reflection of the global supply and demand imbalance. Production in the United States dropped at the start of COVID and is only slowly coming back. And he says the President’s green energy plan plays a role, too.