Charging my US iPad in Israel
Israel has 220v/50Hz power that's standard throughout most of the world, so if there are problems with using an iPad charger to charge, it would most likely be due to substandard local power and not some problem with your equipment.

Even in high power mode, charging from a MacBook Pro is not a good option to charge an iPad unless it's in AirPlane mode with the screen off or powered down entirely so that all the charge can go to the battery.