That is why Ukraine is dependent on weapons from outside - and so they enter

However, he states one thing: They work and they are effective.

Deliveries have so far reached their targets relatively quickly and they play an important role.

While Russia risks running out of troops in front of ammunition, the situation is the opposite for Ukraine, according to Gressel.

About 15 countries, including Sweden, have so far sent military support to Ukraine.

Deliveries mainly enter the country from the west, across the Polish-Ukrainian border.

There is a long-established cooperation between the two countries' intelligence services, according to Gressel.

- But I would not rule out that they go through Romania as well, especially in the direction of Odessa.

Diversified routes

Prior to the Russian invasion, weapons were transported to Ukraine by transport aircraft.

But since the war broke out, it has become much more difficult to make large deliveries.

They must be spread over both time and place as they are targets for Russian troops.

- It must not be a disaster for Ukraine if they access a delivery, says Gustav Gressel.

Arms transport is threatened by, among other things, Russian fighter jets.

But so far, Ukraine has managed to protect critical areas with the help of air defenses, which makes any attacks costly for Russia, according to Gressel.

Secure your own defense

A potentially bigger problem is that many countries in the immediate area have begun to review their own weapons depots in the shadow of the Russian threat.

The domestic pressure to secure their own defense is growing, according to Gustav Gressel.

At the same time, it is precisely countries in Eastern Europe that are sitting on many of the Soviet weapons systems that Ukraine now needs.

- You have to send something that the Ukrainians can use, something that they have trained with and that they know how to use.

The weapon systems they know they use very smartly.

He specifically mentions the air defense that has worked effectively so far.

Ukraine has fired a large number of robots of the types BUK and S 300 - both are Soviet models, but the stocks are not inexhaustible.

One solution could be for NATO to send more soldiers to its member countries in Eastern Europe, says Gustav Gressel.

- It would give the countries that take off their own weapons stocks an assurance.

Their arms exports could be offset by new troops, fighter jets, or anything else, he says.