In this week’s top tweets: Canada calls the ethnic cleansing campaign by the Burmese military “crimes against humanity,” while Israel remains one of the few countries in the world willing to sell arms to the Myanmar. The UK continues to sell arms to Saudi Arabia despite the Kingdom’s war crimes in Yemen; Facebook’s “catastrophic” A/B test; Afghanistan has tougher laws on child marriage than Florida; and HRW obtains documents suggesting the US is monitoring American citizens.