Apostolic Succession

I had a couple of questions that I hope someone could clear up for me.

1. Do the orthodox believe that the Roman Catholic line of apostolic succession is still valid? If so, does that mean that the anglican line of succession is valid as well?

2. Do the orthodox believe that the Roman Catholic eucharist still becomes the body and blood of Christ; in other words, is the Roman Catholic eucharist still valid?

3. Given the fact that "reunification" of the eastern and western church would require some bending on both parties, in which areas would Rome have to bend and in which areas would the orthodox be willing to bend in order to achieve reunification?

Thanks-Jake