If they won't take the material down voluntarily, yes, you can sue. Your post is fairly long. Have a free telephone consultation with counsel....

You should be represented by counsel in this transaction. At the least, Have a free telephone consultation with counsel. Jack

At a minimum, the loan agreement and the settlement agreement have to be reviewed. Have a free telephone consultation with counsel. Jack

There are three methods used for process service in international cases: Service via the Hague Convention on Extrajudicial and Judicial Documents,...

An agreement will usually state which law governs. Yours is a bit different, so other factors must be considered. Jack

Unless the partner will voluntarily correct the transgression, you most likely would have to litigate this. Jaxk

Who owns the remaining 25%? Who owns the remaining 25%? Who owns the remaining 25%? Have a free telephone consultation with counsel....

An attorney adept at contracts and agreements, and litigation. Have a free telephone consultation with counsel. Jack

Yes, they can be stopped, by litigation if necessary. Have a free telephone consultation with counsel. Jack

The question is whether the "term sheet" constitutes a binding agreement or whether it just represents negotiation. Jack