Two Affected Parties - 1992 ISDA Provision
Content and comparisons
Be careful here: Under the 1992 ISDA, if your Failure to Pay is also an Illegality it is treated as an Illegality: if there are two Affected Parties you will face a significant delay when closing out. A bit of a trick for young players.
Note also that reference to Illegality has been excised from the 2002 ISDA version. They changed this because, in practice, it turned out to too be hard to implement a transfer or amendment after an Illegality. Folks realised that if an Illegality happens you don’t want to have to wait 30 days to terminate, especially if you can’t rely on 2(a)(iii) to withhold payments in the meantime.
Handwaving appeals to one another’s good natures with this talk of reasonableness and, of course, both parties will probably be incentivised to keep the trade on foot if some unfortunate tax eventuality comes about — seeing as they were incentivised enough to start it —but ultimately, this is an agreement to agree, however you dress it up, and is as contractually enforceable as one. That is, not very.