The Israeli withdrawal from Gaza, without Hamas being disarmed or an international force in place, creates a space for violent clashes. Hamas, armed gangs, and powerful clans are already competing for control, illustrating a critical risk in phased peace plans where security is not transferred seamlessly.

Russia perceives itself as having momentum and believes its military position will strengthen in the coming months. This confidence removes any urgency to negotiate or make significant concessions, making it the most significant impediment to ending the conflict.

The most significant challenge to a lasting peace is not agreeing on territorial lines but on the implementation sequence. Debates over whether a ceasefire, troop withdrawal, security guarantees, or referendums should come first create complex logistical and trust issues that could easily cause a deal to collapse.

A swift peace deal in Ukraine might not be the preferred outcome for all its European partners. Some may see a longer conflict as a strategic opportunity to bolster their own military capabilities while Russia is occupied.

A ceasefire won't eliminate underlying tensions. Instead, it could create new flashpoints, such as a breakdown of the agreement or instability in Belarus, potentially dragging NATO into a future conflict more directly than the current war.

Persistent diplomatic efforts and speculation about a looming end to the war have a detrimental effect on the Ukrainian military. This creates uncertainty that discourages enlistment and harms morale, as potential recruits question the need to join a conflict that might soon be settled by external powers.

Ukraine's most realistic theory of success is not reclaiming all territory militarily, but leveraging its advantages to stabilize the front and inflict unsustainable casualties and economic costs on Russia. This strategy aims to make the war so futile for Moscow that it forces a favorable negotiated settlement.

The temporary US-Iran ceasefire is fundamentally fragile because the core demands are mutually exclusive. Iran insists on its right to enrich uranium, while the US demands it swears off enrichment entirely. This core conflict makes a permanent deal highly improbable, regardless of short-term de-escalation.

Russia views the presence of NATO-member troops as an unacceptable condition. The UK and French promise of such a deployment acts as a poison pill in negotiations, making a ceasefire agreement less likely, rather than serving as a credible deterrent against future aggression.