Ben Wallace, the current UK Defence Minister and who is in line to become the new head of NATO, though many say his chances are limited due to Brexit, was asked about Ukraine gaining entry to NATO to which he indicated that it won't be anytime soon, if at all. This marries with similar commentary coming out of the US. While they are not against individual countries signing mutual defence pacts, NATO membership for Ukraine is just a pipe dream, the country could not meet the criteria, despite NATO members and many others arming it to the teeth to help with its fight with Russia. Wallace in the same interview agreed that the western nations currently backing Kyiv are running out of armaments to donate.
As an alternate strategy there are proposals for all current NATO members to drastically increase their defence budgets and increase the output from their armaments industries, putting many on a semi permanent war footing for the foreseeable future. Counter to this the US is desperately trying to improve its relationship with both Russia and China. Lloyd Austin, US Defence Secretary, recently asked for a meeting with his Chinese counterpart but was rejected. The US is also struggling to engage with Russia over either renewing or renegotiating the START nuclear weapons agreement. So far to no avail. Seems both Russia and China are a tad mift at the US attitude towards them and how they might unite going forward on several fronts.