A review of this week's major US international tax-related news. In this edition: 

US Treasury issues proposed regulations on CAMT, extends penalty relief for failure to pay estimated CAMT – Treasury and IRS officials to evaluate narrowing scope of future anti-partnership basis-shifting guidance – Official offers international regulatory update – OECD releases standardized ICAP template for tax administration outcome letters – OECD to address incentives that undermine BEPS Pillar Two GloBE rules.