# [24H] Russian Su‑35 Border Provocations Over Sumy Likely to Repeat With Longer Incursions

*Issued Tuesday, August 18, 2026 at 10:51 AM UTC — Hamer Intelligence Services Desk*

**Issued**: 2026-08-18T10:51:03.053Z (2h ago)
**Expires**: 2026-08-19T10:51:03.053Z (22h from now)
**Category**: MILITARY | **Confidence**: 65% | **Impact**: HIGH
**Risk Direction**: escalatory
**Affected Regions**: Sumy Oblast, Northeastern Ukraine, Kursk and Belgorod regions of Russia, NATO eastern flank (Poland, Romania, Baltics)
**Affected Assets**: Ukrainian air defense inventory, Western air defense resupply pipelines (Patriot, NASAMS, IRIS‑T), EUR/RUB currency pair via risk sentiment, Eastern European sovereign bond spreads
**Permalink**: https://hamerintel.com/data/forecasts/20785.md
**Source**: https://hamerintel.com/forecasts

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## Prediction

Russian forces are likely to repeat Su‑35 incursions into or skimming Ukrainian airspace over Sumy Oblast in the next 24 hours, pairing them with missile and drone salvos to stress Ukrainian air defenses. The aircraft will likely remain on brief, probing courses but may extend dwell time or simulate engagement profiles to test rules of engagement. This increases the risk of an aerial incident, including a Ukrainian attempt to engage that Moscow could frame as escalation, potentially affecting Western support debates. Confirmation would be further radar tracks and OSINT geolocation of Russian fighters crossing or tightly hugging the border; denial would be a shift to missiles and drones only, without manned aircraft near the contact line.

## Drivers

- Multiple overlapping reports of Su‑35 crossing into Ukrainian airspace near Myropillya
- Concurrent missile strikes on Sumy and Kyiv regions
- Trend of Russia testing and saturating Ukrainian air defenses
- EUCOM threat level assessed as CRITICAL