内容摘要：The Trump administration argues the expanded military areas are necessary for national security, and points to its decisive election victory as a mandate. Stronger border security was a key Trump campaign promise and one of the biggest issues for voters.

The Trump administration argues the expanded military areas are necessary for national security, and points to its decisive election victory as a mandate. Stronger border security was a key Trump campaign promise and one of the biggest issues for voters.

Oles and his men are in the infantry, serving in the trenches right at the very front of Ukraine's defence. It's rare for journalists these days to speak to infantrymen, as it's become too risky to go to these trenches. We meet Oles and Maksym in a rural home converted into a makeshift base, where the soldiers come to rest when they're not on deployment."The longest I spent at the position was 31 days, but I do know guys who have spent 90 and even 120 days there. Back before the drones arrived, the rotations could have been between 3 or 7 days at the position," says Maksym.

"War is blood, death, wet mud and a chill that spreads from head to toe. And this is how you spend every day. I remember one instance when we didn't sleep for three days, alert every minute. The Russians kept coming at us wave after wave. Even a minor lapse would have meant we were dead."Oles says Russia's infantry has changed its tactics. "Earlier they attacked in groups. Now they only send one or two people at times. They also use motorcycles and in a few instances, quad bikes. Sometimes they slip through."What this means is that the front lines in some parts are no longer conventional lines with the Ukrainians on one side and the Russians on the other, but more like pieces on a chessboard during play, where positions can be intertwined.

This also makes it harder to see advances made by either side.Despite Russia's recent gains, it will not be quick or easy for it to take the whole of the Donetsk region, where Pokrovsk lies.

Ukraine has pushed back hard, but it needs a steady supply of weapons and ammunition to sustain the fight.

And as the war enters a fourth summer, Ukraine's manpower issues against a much bigger Russian army are also evident. Most of the soldiers we meet joined the military after the war began. They've had a few months of training, but have had to learn a lot on the job in the middle of a raging war."It's absolutely critical that we build these reservoirs now," David Henderson, chief executive of Water UK, told BBC News.

"If we don't build them now, we wait another 10 years, it's going to cost even more, so we can't keep kicking the can down the road any longer."But building reservoirs doesn't come cheaply, even with accelerated planning processes. That could ultimately filter down to people's bills.

Nor does it come quickly. No new major reservoirs are due to be completed this decade.Some experts highlight that reservoirs are no silver bullet, and warn that managing how we use water needs to take greater precedence in a warming climate.