NewsReal: How Serious Are Western Leaders About Going to War With Russia?

We heard last week that some EU leaders, notably French president Macron, want to send Western armed forces into Ukraine in order to 'stop Russia from winning'. We know that their armed forces ARE already in Ukraine, but the implication of recent fighting-talk is that they're considering escalating the current 'proxy war' to 'the next level'. How serious ARE Western leaders about doing this? They sound convinced that there is no other way, but are they just 'posturing'? We may soon find out...