How should a country react when its diplomats commit a crime and claim diplomatic immunity?

How should a country react when its diplomats commit a crime and claim diplomatic immunity?
While making a political show of turning away migrant children at the border, Texas Governor Rick Perry has offered “honorary citizenship” to a right-wing Australian author.
The last time the U.S. accused Russia of downing a civilian airliner, nuclear war nearly broke out.
After learning airline crisis management the hard way, Malaysian Prime Minister Najib Razak has quickly taken control of the investigation of MH17.
Fighting corruption is a proven means to reduce inequality. But the issue has often been co-opted by elites looking to do just the opposite.
Despite its peace constitution, Japan boasts one of the largest militaries in the world.
Without disarmament our nuclear nightmares may become realities — but there is still time to avoid disaster.
Controlling the South China Sea enables Beijing to project power into the Indian Ocean.
What country failed to reveal a massive amount of plutonium to the International Atomic Energy Agency?
A growing global movement is ensuring that if the Japanese government won’t hold itself to account for its crimes against women, then history will.