Overall, a solid job.
There are two main things you want to focus on- proof reading and tighter writing. There were some points your analysis where I had to reread a sentence a few times to understand what you were trying to say. If you can clean those two things up, your essay will be much stronger.
Proof reading:"The author agrees with Leonard's handling of international conflicts and hence feels that Leonard needs to be called to put the country's neighbors back."
- ...put the country's neighbors back
what? back where? The argument says back to work, but when I read that sentence, it's not clear.
" Even though public may not approve, sometimes leader may indeed give his best performance..."
- sometimes
a leader or sometimes
leaders"It also needs to be figured whether president Leonard can repeat the earlier performance even in current times. "
Like in the sentence correction, I believe the correct idiom is
whether or not. Also figured? should be "figure out"
"There are plenty number of cases where the leader which met with success in the past may not manage to do the same in different time periods later."
- Plenty number is redundant. Just say "There are a number of cases..."
Those are just some of the things that stood out to me in terms of proofreading.
More coherent writing:"Similarly, Unemployment can result due to various reasons. The reasons may include factors such as lack of skills even though they depend on the President capability to increase industrialization to provide jobs. On the other hand, the same factors can also account for his capability of handling things at needed level."
- this second paragraph should be longer and have more analysis. My recommendation is to either get rid of it to spend more time writing about the other topics, or integrate this into another paragraph.
Also in terms of the part of the analysis of how to make the argument stronger, spend an extra sentence or two about that. Make sure it is very clear that if the author had considered the flaws you are pointing out, the conclusion of the argument would be much stronger.
Cheers-
J