The National Security Council directed officials to put the package together, as Washington grew increasingly concerned over a massive Russian military buildup near the border with Ukraine and in the Crimean Peninsula, according to three of the people, who like the others asked not to be named in order to speak candidly about internal discussions. Officials at the State Department and Pentagon worked to assemble the proposal. But officials on the National Security Council ended up putting the proposal on hold after Russia announced it would draw down troops stationed near Ukraine and in the lead-up to President Joe Biden’s high-stakes summit with Russian President Vladimir Putin. One of the sources said the package is still intact, and could be sent to Ukraine quickly. The Washington Post first reported that the administration considered and has now frozen the package. The fact that National Security Council officials froze the aid and the specific weapons discussed for inclusion in the aid package have not been previously reported.