In the quiet architecture of diplomacy, a figure who moves between state power and financial strategy is crossing the Atlantic — Kirill Dmitriev, head of Russia's sovereign wealth fund, is traveling to Washington to meet with officials of the Trump administration. His visit, neither fully official nor entirely private, reflects Moscow's reading that a new American government may offer room for conversation where recent years have offered little. The talks, shrouded in the customary discretion of preliminary diplomacy, may tell us less about what has been decided than about what both sides are