is or are?

[Hanka]

Hi,

could you please tell me which of these is correct:

He declares that insolvency, liquidation nor bankruptcy is/are threatening.

Thanks a lot!

Hanka

 

[puzzle]

The answer is " is". I think.

 

[Hanka]

Thanks a lot! And what about this:

He declares that the conclusion and performance of the contract is/are not in conflict with ....

 

[puzzle]

are.