Republic of Hungary, et al., Petitioners v. Rosalie Simon, et al.

1. Does historical commingling of assets suffice to establish that proceeds of seized property have a commercial nexus with the United States under the expropriation exception to the Foreign Sovereign Immunities Act? 2. Must a plaintiff make out a valid claim that an exception to the FSIA applies at the pleading stage, rather than merely raising a plausible inference? 3. Does a sovereign defendant bear the burden of producing evidence to affirmatively disprove that the proceeds of property taken in violation of international law have a commercial nexus with the United States under the expropriation exception to the FSIA?