Regions in Ukraine are currently holding referendums on joining Russia, and Ukraine has said anyone who participates will face a 5-year prison sentence. The votes were widely dismissed as a deception.
Either way, the votes will be used by Russia to annex the areas. This, in turn, will change Russia’s military position in these areas as the country’s defense position. This could (should?) provoke more brutal measures.
None of this is new today, but the White House says it is proposed to impose additional economic costs on Russia with allies if it goes ahead.
I don’t know what’s left to sanction that won’t harm other countries, but there is a growing risk of secondary sanctions on oil and that would be a real mess in the energy field.