[HIGHLIGHTS] Their countries were accused of hiding the trace and covering up for the Nord Stream bombers. Russia summons ambassadors of Germany, Denmark and Sweden

Russia says it has summoned the ambassadors of Germany, Sweden and Denmark. The move is over an investigation into explosions that damaged two Nord Stream gas pipelines.

Russia says the three countries are trying to hide who was behind the blasts. The United States and NATO have called the blasts an "act of sabotage," and neither side has provided any evidence. The Russian Foreign Ministry also said it would respond to Sweden's expulsion of 5 diplomats in April. Ministry: "It is no coincidence that unlikely 'leaked' accounts (of what happened) are being broadcast"