Inside missile defence base protecting Europe - as residents bordering Russia say 'scare tactic' needed

Along the thin strip of beach and woodland known as the Vistula Spit which marks the northernmost demarcation between Poland and the Russian exclave of Kaliningrad, there is not much in the way of a border.

Just some torn wire fencing and a few rotten posts which seem to stagger drunkenly into the shallows of the Baltic Sea. Beneath a sign barring entry, we find a couple of empty bottles of Russian cognac and vodka.

It doesn't feel like the edge of NATO territory. "I don't see much protection.

It's not good," says Krzysztof from Katowice, who has come to inspect the border himself. "We have to have some kind of scare tactic, something to show that we are trying to strengthen our army," says Grzegorz, who lives nearby.

"At the same time I think I would not base the defence of our country solely on our army. I am convinced that Europe or America, if anything were to happen, will help us 100%." Poland is investing massively in its defence, with military spending set to hit 4.7% of GDP in 2025, more than any other NATO country.

Polish Prime Minister Donald Tusk has said he will introduce voluntary military training for men of any age, and women too should they wish, so the army has a competent reserve force in the event of war. He is investing $2.5bn in stronger border fortifications between Russia and Belarus, a project called East Shield which will include anti-tank obstacles, bunkers and potentially minefields too.

Along with its Baltic neighbours, Poland is withdrawing from the Ottawa convention against the use of land mines. It hasn't committed to using them, but it wants to have that option.

We've been granted access to one of the cornerstones of Polish, and European defence, which is a couple of hours drive from the Vistula spit at the Redowicze military base. Aegis Ashore Poland, together with its sister site in Romania, are the land-based arms of NATO's missile defence shield over Europe, which is run by the US navy.

They are symbols of the US commitment to NATO and to the protection of Europe. And despite changes at the top of the Pentagon it is "business as usual.