```html Arsenal Maintain Perfect Champions League Start with Olympiakos Victory

Arsenal secured a comfortable 2-0 victory against Olympiakos at the Emirates Stadium on Tuesday night, continuing their flawless start to the Champions League campaign. Goals from Gabriel Martinelli and Bukayo Saka sealed the win for the Gunners, who dominated possession and controlled the tempo of the match.

Key Moments Define Arsenal's Dominance

Martinelli opened the scoring in the first half with a well-taken strike, capitalising on a defensive lapse from the Greek side. Saka then doubled the lead after the break, showcasing his composure in front of goal after a flowing team move. Olympiakos struggled to create meaningful chances, with Arsenal's defence remaining largely untroubled throughout the 90 minutes.

The victory marks a significant step forward for Arsenal in their quest for Champions League glory, building on their opening-day win. It also extends their impressive recent form, solidifying their position as a team to watch in the competition.

Tactical Analysis: Arsenal's Fluidity Too Much for Olympiakos

Speaking to BBC Sport, former Arsenal midfielder Adrian Clarke praised the team's tactical flexibility. "Arsenal's ability to switch between attacking formations, overloading the midfield and then spreading play wide, proved too much for Olympiakos to handle," Clarke commented. "Saka's versatility and Martinelli's clinical finishing were also key factors in the victory. While Olympiakos defended resolutely at times, they lacked the attacking threat to truly trouble Arsenal."

Historical Context: Arsenal's European Ambitions

Arsenal's history in the Champions League has been marked by periods of success and frustration. Reaching the final in 2006, where they lost to Barcelona, remains a highlight. However, recent years have seen the club struggle to replicate that level of performance. This season represents a renewed opportunity for Arsenal to establish themselves as a major force in European football once again.

Current Standing and Future Prospects

With two wins from two matches, Arsenal currently sit top of their group. Their next Champions League fixture will be a crucial away match, presenting a significant test of their credentials. Manager Mikel Arteta will be keen to maintain the momentum and secure qualification for the knockout stages as quickly as possible.

Olympiakos' Struggles Highlight Gap in Quality

For Olympiakos, the defeat underscores the challenges faced by Greek clubs in competing at the highest level of European football. While they showed glimpses of quality, they ultimately lacked the firepower and defensive solidity to match Arsenal's intensity. They will need to improve significantly in their remaining group matches to have any chance of progressing.

Arsenal: Continue their perfect Champions League start. Olympiakos: Face an uphill battle to qualify for the knockout stages.

Looking Ahead: Key Talking Points

The match raised several key questions for both teams:

Can Arsenal maintain their impressive form throughout the Champions League campaign? Will Olympiakos be able to regroup and challenge for a qualifying spot? How will Mikel Arteta manage his squad to cope with the demands of both domestic and European football?

These questions will be answered in the coming weeks as the Champions League group stage progresses.

Former England international and BBC Sport pundit, Jermaine Jenas added, "Arsenal look a different beast this year. The additions they've made have added real quality and depth. They're playing with a confidence and swagger that's been missing for a while. While it's still early days, they're certainly a team that other sides will be wary of." ```