The vessel was flying a false flag and under a judicial seizure order, according to US officials cited by US media.
About 100 objects were discovered in the presidential silverware keeper's personal locker, vehicle and home.
Authorities board vessel off Swedish coast after it suffered an engine failure.
Some European leaders feel sidelined as US mediation takes Russian priorities into consideration.
Yury Ushakov's remarks come a day after US and Russian officials held talks on the US proposal in Florida.
Barca punish 10-man hosts Villarreal to win eighth consecutive La Liga game and move four points clear at the summit.
Israel's defence exports increased 13 percent in 2024 compared with the previous year to a record of almost $15bn.
Liverpool and Egypt star forward Mohamed Salah is centred on winning his first Africa Cup of Nations title.
As Gaza’s displaced Palestinians suffer from winter storms, UNICEF explains the basic needs essential to save children.
The latest trove of legal documents has been heavily redacted, but several famous figures are recognisable.