2- Dependent clause: "I think", here you can't put this clause without a connector (Co-ordinating, sub-ordinating, or co-relative conjunctions, as well as, relative pronouns or adverbs ) or at least a comma.
2- "I have come across an interesting article that I would like to share with you": This affirmative and complex sentence is correct, but you should have used the adverb "just" before the main verb "come".
Just= a short time ago.
3- "basically it says that we live in interesting times and may expect changes in the future it also points to the delicate position that turkey is in"
A- You started your sentence here with the adverb "basically" which should be started with a capital letter and followed by a comma.
B- "it also points to the delicate position that turkey is in": It's a completely new sentence.