1) The document proposes 4 economic measures against Russia: (1) removing Russia from the SWIFT banking system, (2) blocking transactions of the Russian central bank, (3) seizing overseas assets of Russian oligarchs, (4) halting gas imports from Russia.
2) It argues that each measure has drawbacks but they must be tried together to effectively pressure Putin. Blocking Russian banks is key to complement removing SWIFT. Seizing oligarch assets requires an objective legal criterion.
3) Halting gas imports would deprive Russia of much funding but requires financial support for affected countries and industries through mechanisms like the EU Recovery Fund. The measures aim to impose severe economic costs on Russia