Dopey, Putin has seized Crimea. And? Possible option...

Dopey, Putin has seized Crimea. And?

Possible option combinations:

sanctions

the EZ sourcing energy needs elsewhere post haste

speeding up the admission of as many eastern European countries into the EZ as possible especially Ukraine.

NO to all 3.
Financial sanctions?
Ask London and all other tax havens. Maybe not.
Economic sanctions?
Ask every energy dependent country in EZ, not just Germany.
Posted the energy chart before, i am sure that you have ignored it.
UN sanction?
NO, China & Russian veto.
NATO action?
Ukraine's constitution is actively forbids joining NATO a bit similar to Switzerland.

'speeding up the admission of as many eastern European countries into the EZ as possible especially Ukraine.'

Only if the speeding up process extends to the next 50 years.

Doing nothing is not an option.

A good start would be to keep to the agreement signed. There is NO NEED to INVENT new agreements and policies.
But first of all - get back to diplomacy and discontinue the mass-media propaganda overdrive.